Problems and Solutions of Coil Feeding

Coil feeders are very common in metal stamping. The stability and accuracy of feeding will affect the quality of the finished product. Next, we will discuss common problems with the coil feeder and how to solve them.

Working Principle

The feeder performs different actions based on signals received from the press. Relaxation methods can be divided into mechanical relaxation and pneumatic relaxation. When the press slide rises, the rollers clamp the coil strip, and the feeder starts feeding. When the press slide downwards, the rollers release the coil strip, and the press completes one stamping operation.

Feeding Position Deviation



Feeding position deviation occurs when the feeder centerline does not align with the processing centerline, ultimately affecting product quality. Deviation may happen if the strip slips during transport due to worn or oily rollers. In this case, clean or replace the feeding rollers. Adjusting the limit rollers can also correct the strip entry position, ensuring accurate feeding into the press.

Inaccurate Feeding Length

(These are RUIHUI's mechanical release feeder RNC and pneumatic release feeder RNC-HA.)

Insufficient roller clamping pressure can cause unstable feeding. Try to check if the spring that applies pressure to the roller is aging or loose, and replace or tighten the pressure spring if necessary. Worn or oily rollers can cause slippage, affecting the feeding pitch. Cleaning or replacing the rollers can help resolve this issue.

Coil Surface Damage

If the coil surface is damaged after passing through the feeder, first check whether there are foreign objects on the rollers. Soft materials are more prone to damage, and using soft rubber rollers can effectively solve this problem. Excessive roller pressure can also cause surface damage, so inspect and adjust the corresponding pressure devices as needed.

In general, different types of coil feeders have different structures. Understanding feeders can help us better locate faults. If you are interested in coil feeders or have any questions, you can contact us. Thank you for watching.